新疆焉耆日光温室热环境差异性分布的研究

为了研究日光温室内部热环境的差异性分布,在大寒日期间(2014年1月20-22日)对焉耆地区日光温室后墙和地面不同位点的温度和光照进行了监测和分析。结果表明:地表和后墙表面温度分布的不均匀主要由其表面的太阳辐射能分布不同和传热性能的不同所致。揭帘后,地表总辐射照度表现为由南向北递增,地表温度表现为中部前部后部,各部位温差最大值出现在下午16:00,此时中部地表最高达到29.2℃,而其表面的太阳总辐射照度为264.1 W/m2,小于前部。后墙表面的总辐射照度和温度自上而下递增。盖帘后,地表温度在南北方向上由南向北递增,后墙表面的温度自上而下递增。次日11:00时(揭帘之前)各部位平均温差最小。

Research on the Distribution of Solar Greenhouse Thermal Environmental Difference in Yanqi,Xinjiang

The difference distribution of thermal environment inside solar greenhouse was studied,the temperatures and illuminations on different parts of solar greenhouse back wall and ground surface were monitored and analyzed in Yanqi region from January 20 to 22,2014.The results showed that the temperature heterogeneous distributions on these surface were caused by the solar irradiancy difference and heat-transfer performance.After heat preservation curtain was rolled up,the total solar irradiance on the ground surface increased from south to north in the room.The difference part temperature sequences on ground surface were： middle 〉 front〉 rear.The maximum temperature difference of all parts appeared at 4：00 pm in the afternoon.At this time,the middle part surface temperature was 29.2 ℃,on this part surface, total solar irradiance was 264.1 W/m2,1ess than the front part.The total irradiance and temperature of surface on back wall increased from top to bottom.After heat preservation curtain was put down,the surface temperatures of ground increased fl＇om south to north,while the surface temperatures of back wall increased from top to bottom.At 11：00 am （before heat preservation curtain was uncovered） next day,a minimum average temperature differences of all parts appeared.